kafka-neo4j/src/main/java/com/winhc/service/impl/PersonMergeImpl.java

package com.winhc.service.impl;

import com.alibaba.fastjson.JSON;
import com.winhc.service.RelationService;
import com.winhc.utils.CompanyUtils;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.neo4j.driver.Driver;
import org.neo4j.driver.Session;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author π
 * @Description:股东关系 人->公司
 * @date 2021/1/11 10:03
 */
@Slf4j
@Service("personMergeImpl")
@AllArgsConstructor
public class PersonMergeImpl implements RelationService {

    private final Driver driver;

    @Override
    public String save(List<Map<String, Object>> batch_list) {
        if (batch_list.isEmpty()) return null;
        long start = System.currentTimeMillis();
        Session session = driver.session();
        final String cql =
                "\nWITH  {batch_list} AS batch_list \n" +
                        "UNWIND batch_list AS row \n" +
                        "MATCH (m:个人{person_id:row.merge_human_pid})\n" +
                        "MATCH (n:个人{person_id:row.deleted_human_pid})-[r]-(x:企业)\n" +
                        "with m,n,r,x\n" +
                        "CALL apoc.merge.relationship(m, TYPE(r), properties(r),{}, x,{}) YIELD rel\n" +
                        "SET m:" + CompanyUtils.getIncrPersonLabel("新增") + "\n" +
                        "SET n:" + CompanyUtils.getIncrPersonLabel("删除") + "\n" +
                        "DELETE r";
        log.info("consumer size: {}, cql:{}", batch_list.size(), cql);
        String data = CompanyUtils.writeNeo4j(session, cql, new HashMap<String, Object>() {{
            put("batch_list", batch_list);
        }});
        session.close();
        log.info("class:{} | save size:{} | cost:{}", PersonMergeImpl.class.getSimpleName(), batch_list.size(), (System.currentTimeMillis() - start));
        return data;
    }
}